Moser 31 spline axles

orangeRcode · October 17th, 2006, 12:32 AM

I have built the rear of my Mach with Moser 31 splines, 31 spline trac lok, 4.10s, and FRPP girdle. I have run ET drags at the track twice. Is it possible to bend an axle with around 300 rwhp? I dyno'd my car last weekend and it had a definite wobble at low speeds on the passenger side. Can I effectively evaluate this by jacking up the car and turning the wheels to look for a wobble? Your thoughts?

Darrell · October 17th, 2006, 12:37 AM

You shouldn't have done any damage to a Moser 31 spline axle at that low of horsepower.

ChrisJ · October 17th, 2006, 01:11 AM

Could it have been a bad axle maybe?

orangeRcode · October 17th, 2006, 01:12 AM

That is what I was thinking. I have been launching at 6000 - 6500 rpms but that was only the last time out. Could it be an axle bearing? Besides a tear down, anyway to diagnois the problem?

orangeRcode · October 17th, 2006, 01:14 AM

Originally Posted by ChrisJ

Could it have been a bad axle maybe?

I suppose it is possible but I have had them on the car for about a year with 4-5 times to the track. This was the 3rd different time on the same dyno and was the first time there was the wobble.

ChrisJ · October 17th, 2006, 01:18 AM

Did you replace the bearings when you put them in?

orangeRcode · October 17th, 2006, 01:20 AM

Originally Posted by ChrisJ

Did you replace the bearings when you put them in?

Yes, all new bearings. Figured as long as you were in there, might as well put new in. The rear had less than 3,000 miles on it when done.

ChrisJ · October 17th, 2006, 01:41 AM

Wow...What did the tuner have to say about it?

orangeRcode · October 17th, 2006, 11:01 AM

Originally Posted by ChrisJ

Wow...What did the tuner have to say about it?

Say about what? I did the work.

The general concensus is I didn't bend the axle. I will investigate this weekend and report back.

ChrisJ · October 17th, 2006, 11:37 AM

I was asking what the tuner thought about your car doing that...

I would take the axle out and send it back...You should not be bending axles...

orangeRcode · October 17th, 2006, 12:28 PM

Originally Posted by ChrisJ

I was asking what the tuner thought about your car doing that...

I would take the axle out and send it back...You should not be bending axles...

He said it happens with high rpm launches with slicks. The funny thing is I haven't noticed it anywhere else. I will see if I can get to the bottom of this on Saturday or Sunday.

matrixpuba · October 17th, 2006, 04:09 PM

a local guy with the 31 spline moser axles had the same problem. its a white saleen with all the bolt ons with slicks. he brnt 1 axle out near the hub

stang fanatic · October 20th, 2006, 09:29 PM

pull the wheel off, and see is the axle stub wobbles...bearings going to make a grinding noise, especially turning left and leak oil. sounds like a rim or tire problem.

ChrisJ · October 21st, 2006, 03:04 AM

Any new info on this?

sleepinggt · February 6th, 2007, 10:47 PM

are your axle tubes welded? could have torqued one a little bit and it's causing excess wear on your bearings

October 17th, 2006, 12:32 AM	#1
orangeRcode Hardcore Enthusiast 12.37@110.89 Join Date: May 2006 Location: Mustang/Yukon, OK Posts: 1,781	Moser 31 spline axles I have built the rear of my Mach with Moser 31 splines, 31 spline trac lok, 4.10s, and FRPP girdle. I have run ET drags at the track twice. Is it possible to bend an axle with around 300 rwhp? I dyno'd my car last weekend and it had a definite wobble at low speeds on the passenger side. Can I effectively evaluate this by jacking up the car and turning the wheels to look for a wobble? Your thoughts? __________________ http://www.moddedmustangs.com/forums/image-apic687.jpg

October 17th, 2006, 12:37 AM	#2
Darrell MM Ninjas! 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: Fond du Lac, Wisconsin Posts: 6,497	You shouldn't have done any damage to a Moser 31 spline axle at that low of horsepower. __________________ Racing in memory of Dave Bandt 11/19/69 - 3/23/08 "he's traded his wheels for wings" Professor of Natural Aspiration Thanks to: Artie at Trick Flow, Dave at Team Z Motorsports, Brian at Total Engine Airflow and Harold at Furo Racecraft

October 17th, 2006, 01:11 AM	#3
ChrisJ The Cable Guy... 2002 Mustang GT SLOW Join Date: Jun 2006 Location: Shepherdsville, Kentucky Posts: 15,352	Could it have been a bad axle maybe? __________________ My Junk www.myspace.com/cjobe

October 17th, 2006, 01:12 AM	#4
orangeRcode Hardcore Enthusiast 12.37@110.89 Join Date: May 2006 Location: Mustang/Yukon, OK Posts: 1,781	That is what I was thinking. I have been launching at 6000 - 6500 rpms but that was only the last time out. Could it be an axle bearing? Besides a tear down, anyway to diagnois the problem? __________________ http://www.moddedmustangs.com/forums/image-apic687.jpg

October 17th, 2006, 01:18 AM	#6
ChrisJ The Cable Guy... 2002 Mustang GT SLOW Join Date: Jun 2006 Location: Shepherdsville, Kentucky Posts: 15,352	Did you replace the bearings when you put them in? __________________ My Junk www.myspace.com/cjobe

October 17th, 2006, 01:41 AM	#8
ChrisJ The Cable Guy... 2002 Mustang GT SLOW Join Date: Jun 2006 Location: Shepherdsville, Kentucky Posts: 15,352	Wow...What did the tuner have to say about it? __________________ My Junk www.myspace.com/cjobe

October 17th, 2006, 11:37 AM	#10
ChrisJ The Cable Guy... 2002 Mustang GT SLOW Join Date: Jun 2006 Location: Shepherdsville, Kentucky Posts: 15,352	I was asking what the tuner thought about your car doing that... I would take the axle out and send it back...You should not be bending axles... __________________ My Junk www.myspace.com/cjobe

October 17th, 2006, 04:09 PM	#12
matrixpuba Hardcore Enthusiast Join Date: Sep 2006 Location: tennessee Posts: 2,379	a local guy with the 31 spline moser axles had the same problem. its a white saleen with all the bolt ons with slicks. he brnt 1 axle out near the hub __________________ http://img.photobucket.com/albums/v2.../matrixsig.jpg

October 20th, 2006, 09:29 PM	#13
stang fanatic Enthusiast Join Date: May 2006 Location: El Paso, Tx Posts: 853	pull the wheel off, and see is the axle stub wobbles...bearings going to make a grinding noise, especially turning left and leak oil. sounds like a rim or tire problem. __________________ "The gods too are fond of a joke." "If I had only known, I would have been a locksmith. "

October 21st, 2006, 03:04 AM	#14
ChrisJ The Cable Guy... 2002 Mustang GT SLOW Join Date: Jun 2006 Location: Shepherdsville, Kentucky Posts: 15,352	Any new info on this? __________________ My Junk www.myspace.com/cjobe

February 6th, 2007, 10:47 PM	#15
sleepinggt Regular Join Date: Dec 2006 Posts: 96	are your axle tubes welded? could have torqued one a little bit and it's causing excess wear on your bearings

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